Footwear sole



FIG. 1 is a perspective view of a footwear sole embodying my new design;

FIG. 2 is a bottom view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a front view thereof; and,

FIG. 6 is a rear view thereof.

FIGS. 1-6 show portions of an upper in broken lines. The upper is shown for environmental purposes and does not form any part of the claimed design.

The broken lines immediately adjacent to the solid lines, as well as the broken octagonal shape in FIGS. 1 and 2, represent the respective external and internal boundaries of the design. The broken lines form no part of the claim. 

The ornamental design for footwear sole, as shown and described. 